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Win32.HLLW.Autoruner2.36268

Added to the Dr.Web virus database: 2018-04-15

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe, wscript.exe //B "%TEMP%\System\smss-DoOoMs.vbs"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,wscript.exe //B "%TEMP%\System\smss-DoOoMs.vbs"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles% (x86)\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%TEMP%\\AudioDrive\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype' = '"%ProgramFiles%\Skype\Phone\Skype.exe" /minimized /regrun, wscript.exe //B "%TEMP%\\AudioDrive\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%TEMP%\AudioDrive\smss-DoOoMp.lnk"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%TEMP%\AudioDrive\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoM' = '"%TEMP%\AudioDrive\smss-DoOoM.lnk"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'smss-DoOoMs' = '"%TEMP%\AudioDrive\smss-DoOoMp.lnk"'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\smss-DoOoM.lnk
  • %HOMEPATH%\Start Menu\Programs\Startup\smss-DoOoMs.lnk
  • %HOMEPATH%\Start Menu\Programs\Startup\smss-DoOoM.url
Creates the following files on removable media:
  • <Drive name for removable media>:\DCIM.lnk
  • <Drive name for removable media>:\Games.lnk
  • <Drive name for removable media>:\Movies.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Videos.lnk
Malicious functions:
Executes the following:
  • '<SYSTEM32>\taskkill.exe' /F /IM SpyTheSpy.exe
  • '<SYSTEM32>\taskkill.exe' /F /IM TiGeR-Firewall.exe
  • '<SYSTEM32>\taskkill.exe' /F /IM bavtray.exe
Modifies file system:
Creates the following files:
  • %TEMP%\aut1.tmp
  • %TEMP%\WinUpdat.exe
  • %TEMP%\aut2.tmp
  • %TEMP%\WinUpdat.vbs
  • %TEMP%\AudioDrive\smss-DoOoMp.lnk
  • %TEMP%\smss-DoOoM-privacy\smss-DoOoM.vbe
  • %TEMP%\System\smss-DoOoMs.vbs
  • %TEMP%\smss-DoOoM-service\smss-DoOoMs.vbe
  • %TEMP%\AudioDrive\smss-DoOoM.lnk
Sets the 'hidden' attribute to the following files:
  • %TEMP%\WinUpdat.vbs
Deletes the following files:
  • %TEMP%\aut1.tmp
  • %TEMP%\aut2.tmp
Network activity:
Connects to:
  • 'localhost':1038
  • 'go####q.myq-see.com':444
UDP:
  • DNS ASK go####q.myq-see.com
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: ''
Creates and executes the following:
  • '%TEMP%\WinUpdat.exe'
  • '<SYSTEM32>\wscript.exe' "%TEMP%\WinUpdat.vbs"
Executes the following:
  • '<SYSTEM32>\schtasks.exe' /create /sc ONLOGON /RL HIGHEST /tn smss-DoOoM.vbe /tr "%TEMP%\System\smss-DoOoMs.vbs"
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